Water-jacket.



G. W. 'HAWKES.

WATER JACKET. APPLICATION mm JULY 31, mos.

Patented J an. 5, 1909.

BY 4 M 1mg WITNESSES: 1. I

qTORNEY.

CHARLES W. HAWKES, OF NEW YORK, N. Y.

WATER- JACKET.

Specification of Letters Patent.

Patented Jan.5;1909. I

Application filed July 31, 1908. Serial No. 446,305.

To all whom it may concern:

- Be it known that I, CHARLES W. HAWKES, citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Water-Jackets, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in water-jacket constructions for cupola, blast, and similar furnaces and it consists in the novel construction of jacket more fully set forth in the specification and pointed out in the claims.

In the drawings, Figure 1 is a longitudinal section of the jacket taken on line l1 of Fig. 2; Fig. 2 is an elevation of one-half of the jacket broken above the twyers; Fig. 3 is an enlarged cross-sectional detail showing the specific form of stay-bolt illustrated in Fig. l; and Figs. 4, 5, 6, 7, 8, and 9 are sectional details showing various modifications of stay-bolts separating the inside sheet from the outside sheet of the water-j acket.

The present invention is a modification of the construction of water-jacket shown and described in U. S. Letters Patent 815,013 issued to me'under date of March 13, 1906, and while having the same objects and purposes as the patented construction, it possesses the advantage that it is susceptible of a greater number of modifications, any of which may fulfil the requirements of what shall constitute a good commercial, durable and useful water-jacket. In detail it may be described as follows :Referring to the drawings, and for the present to Figs. 1 to 3 inclusive, 1, re resents the inside sheet, and 2, the outsidb sheet, of the water-jacket. In the present improvement, (as in the patented construction) any and all rivet-heads are eliminated from the inside sheet, this being accomplished by welding to the inside sheet what constitutes the stay-bolt in prevailing forms of construction. This welded staybolt is represented by the numeral 3 in the drawing. The free end of the bolt terminates in a reduced portion or stem 3 which is passed through the outside sheet, the ro ecting portion of this stem beyond the s eet 2 being screw-threaded and receiving a nut n which securely clamps the outside sheet against the shoulder 8 formed between the bolt 3 proper and its extension 3.

In the form just described the shoulder s bears against the inner face of the-outside sheet around the opening formed for the reception of the stem 3 but obviously a shoulder of this particular construction (having its plane of disposition at right angles to the longitudinal axis of the bolt) need not be adhered to, and in Fig. 4 the bolt 3 is provided with a conical or sloping shoulder s engaging a corresponding opening or socket in the sheet 2 ,.the screw-threaded projecting portion which receives the nut n being the same in the first form described. The offset or shoulder (s, 8) against which the outside sheet thus bears, and by which it is spaced a permanent distance apart from the inside sheet 1, need not necessarily be formed on the bolt it may have its full equivalent in a nut '0 passed over a fully threaded stem 3 as shown in the modification in Fig. 5, the outer nut n clamping the outside sheet 2 to said inner nut n which may be considered as an ofiset from the stay-bolt 3, as shown in the modification in Fig. 5. Again, the offset may result from a construction in which the bolt is encompassed by a suitable spacing sleeve or thimble 25 extending from sheet to sheet as shown in the modification in Fig. 6, the end of the thimble forming an abutment or shoulder against which the nut n may force the sheet 2. In the last modification the bolt 3 need have no shoulder formation (Fig. 6).

To ofier a more extended surface of contact and support to the sheet 2 than is permitted by the shoulders s, s, or spacing sleeve 25, the free end of the bolt may be flanged as shown at f in Figs. 7, 8 and 9, the flanges (which may be circular, olygonal, star-shaped or otherwise expan ed or extended) serving as means for receiving rivets 4 as shown in Fig. 7, or studs 5 as shown in Fig. 8, or bolts 6 as shown in Fig. 9, the nuts n being passed over the outer ends of the bolts. The rivets, studs and nut-bolts all serve to secure the outside sheet to the spacing bolt, the flanged or expanded portions f according the outside sheet a considerable surface of contact and support. Of course, the portions f are the full equivalents of the shoulders s, s, and the thimble t affording as they do a positive sup ort for the outside sheet, and thus spacing t 1e sheets positively apart.

The foregoing improvement is characterized by a feature common to all the forms shown, and that is, that the means which secure the bolt to the outside sheet, (be such means a nut, rivet, stud or bolt) are independent of the bolt, and in case of repair of the jacket may be removed without destroying the bolt. This of course would be impossible where the bolt is riveted to the outside sheet, since the rivet head forms an in-- make the present form of jacket eminently desirable, It is of course, well known that a weld makes a practically integral connection between two metals thus united, so that a leak is virtually impossible at that oint. Obviously the invention may be emp oyed in other kinds of jackets, such as steamjackets, air-jackets and the like, and the term Water-jacket is to be construed broadly as meaning any e uivalent jacket wherein the invention wou d subserve its pur lose.

aving described my invention, what I claim is 1. A water-jacket comprising an inside and an outside sheet, stay-bolts in integral connection at one end with the inside sheet, and means independent of the stay-bolts for securing the free ends of the latter to the outside sheet.

2. A Waterejacket comprising an inside and an outside sheet, stay-bolts having one end welded to the inside sheet, and means independent of the stay-bolts for securing the free ends of the latter to the outside sheet.

3. A water-jacket comprising an inside and an outside sheet, stay-bolts welded to the inside sheet and having their free ends passed through the outside sheet, and devices independent of the stay-bolts for securing said free ends thereof to the outside sheet.

4. A water-jacket comprising an inside and an outside sheet, stay-bolts 'welded to the inside sheet and spanning the space between the sheets, suitable formations operating in conjunction with the stay-bolts for affording a positive support for the outside sheet, and securing devices independent of the stay-bolts for clamping the outside sheet to the supporting formations.

5. A water-jacket comprising an inside and an outside sheet, stay-bolts Welded to the inside sheet, and having their free ends screw-threaded and passed through the outside sheet, and nuts engaging said screwthreaded portions for securing the parts together.

6. A water-jacket comprising an inside and an outside sheet, stay-bolts welded to the inside sheet, the free ends of the bolts having extensions passing through the outside sheet and terminating in screw-threaded portions, suitable offsets operating in conjunction with the bolt and extending beyond the cross-sectional diameter of the extensions aforesaid, and affording a positive support for the outside sheet, and a nut passed over the screw-threaded extension for forcing the ut e s eet against said f s t A eter je ket o pris ng an inside and an outside sheet, stay-bolts welded to the inside sheet, and having shoulder forms..- tions e ng against the insi e face of the outside sheet, reduced extensions or stems y nd e s oulders passed throug the outi s et a twing s re th ead d portions extending beyond the outside sheet, and nuts passed over the screw-threaded pore tions.

8. A wat -jacket ompr sing an in ide and an outside sheet, stay-bolts welded to the inside sheet and having their free ends passed through and projecting beyond the utsi f t tsid sh et, sa d projecting portions being screw-threaded, means on the stay-bolts for affording a positive support to the inside face of the Outside sheet, and nuts on the screw-threaded projecting portions for clamping the outside sheet to said positive supporting means.

9. A Water-jacket comprising an inside and an outside sheet, stay-bolts welded to the inside sheet and spanning the space be-v tween the sheets, suitable formations inte gral with the bolts and affording positive support to the outside sheet, and removable securing devices for clamping the outside sheet to said supporting formations.

10. A Water-jacket comprising an inside and an outside sheet, stay-bolts in integral connection at one end with one .Of the Sheets, and means independent of the stay=bolts for securing the free ends of the latter to the op: posite sheet.

11. A water-jacket comprising an inside and an outside sheet, stay-bolts welded to one of the sheets, and having their free ends screw-threaded and passed through the ep-. posite sheet, and nuts engaging said screwthreaded portions for securing the parts to-. gether.

In testimony whereof I affix my signature, in presence of two witnesses.

CHARLES W. HAWKES.

Witnesses FREDERICK B. BLACKMAN, SIDNEY Ro E. 

